51870350050 has 24 divisors (see below), whose sum is σ = 98299211796. Its totient is φ = 20356664640.

The previous prime is 51870350029. The next prime is 51870350057. The reversal of 51870350050 is 5005307815.

It can be written as a sum of positive squares in 6 ways, for example, as 16136874961 + 35733475089 = 127031^2 + 189033^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51870349988 and 51870350015.

It is not an unprimeable number, because it can be changed into a prime (51870350057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9784209 + ... + 9789508.

Almost surely, 2^51870350050 is an apocalyptic number.

51870350050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51870350050 is a deficient number, since it is larger than the sum of its proper divisors (46428861746).

51870350050 is a wasteful number, since it uses less digits than its factorization.

51870350050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19573782 (or 19573777 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

Adding to 51870350050 its reverse (5005307815), we get a palindrome (56875657865).

The spelling of 51870350050 in words is "fifty-one billion, eight hundred seventy million, three hundred fifty thousand, fifty".